No. 4.] CATTLE COMMISSIONERS. 557 



Appendix A. 



REPORT BY LANGDON FROTHINGHAM, M.D.V. 



To llie Massachusetts Board of Cattle Commissioners. 



Gentlemen : — I herewith submit a report of my work from 

 March 1 to Dec. 11, 1897. It has consisted of the examination of 

 organs or portion of organs received from the inspectors or other 

 agents of this commission. Where it was deemed necessary to 

 establish the exact nature of a pathological change, not sufficiently 

 evident by a macroscopic examination, a microscopic examination 

 was resorted to, or inoculation. The specimens examined will be 

 found classified in an appended table. Besides this, it has been 

 my duty to establish the presence or absence of glanders and 

 rabies in suspected cases by approved methods. Classified tables 

 relating to these diseases are also appended. 



Tuberculosis. 



The number of tuberculous lesions has not been large, and they 

 were, as a rule, not unusual. One case of marked tuberculosis of 

 the larynx and one of tuberculosis of the trachea are rare, because 

 perhaps, not often sought for. The most interesting specimens 

 were those of miliary tuberculosis of the udder, of which there 

 were three. Such cases are doubly interesting, since it is fre- 

 quently impossible to differentiate them from other udder lesions 

 before death, and even in some instances upon the autopsy table 

 the existence of tubercles can only be suspected ; yet the micro- 

 scopic examination may show minute tubercles thickly scattered 

 throughout the gland, and it is hardly possible to conceive that in 

 such cases tubercle bacilli do not find their way into the milk. 



Actinomycosis. 



Actinomycosis of the udder, when the foci are small, may easily 

 be confounded with tuberculosis, and a differential diagnosis is 

 only possible by a microscopic examination. Two such cases have 

 been examined. Actinomycosis of the lungs, when the lesions are 

 small, may easily be mistaken for tuberculosis, if a macroscopic 



